Integrated Goods and Services Tax secures destination based taxation and preserves input tax credit with Centre State settlement. Integrated Goods and Services Tax governs inter State supplies and treats imports/exports as inter State supplies under a destination principle. IGST is levied on inter State taxable supplies and on imports, with exports zero rated and options to export under bond or pay IGST and claim refund. Place of supply rules determine tax jurisdiction where movement, installation, assembly or conveyance are involved. The regime preserves uninterrupted Input Tax Credit through a prescribed credit utilisation hierarchy and establishes Centre State settlement procedures, including a Central Agency clearing house to verify claims and direct transfers; supplies to SEZs are zero rated with refund options.